Motorola Corporation

Other

Motorola Energy Systems, Inc.

Ke Keryn Lian

Changming Li

Han Wu

Richard H Jung

Lijun Bai

Manes Eliacin

Marc Kenneth Chason

Anaba A Anani

Joseph G Kincs

Gretchen E Fougere

Robert E Stengel

Jie Zhang

Jason N Howard

John Szczech

Tomasz L Klosowiak

Robert B Lempkowski

Aroon V Tungare

Robert H Terbrueggen

George Thomas

Robert T Croswell

Shawn O'Rourke

Frank Russell Denton, Iii

Florence O Eschbach

Daniel J Sadler

Lillian Charell Thompson

Claudia Gamboa

A stack for a bistable microelectronic switch. A porphyrin compound and a conductive polymer are sandwiched between two electrodes. The device exhibits a switching behavior at a certain voltage and can be used in arrays to form a memory device. When a first voltage is applied between the electrodes, the resistance across the two electrodes is very high, and when a increased voltage is applied, the resistance is generally two orders of magnitude lower. Copper phthalocyanine or 5, 10, 15, 20-tetrakis(4-methoxyphenyl)-21H, 23H-porphine cobalt(II) can be used as the bistable compound, and poly-(3,4-ethylenedioxythiophene) and poly-(styrenesulphonic acid) can be used as the conductive polymer.

Bistable microelectronic switch stack

An organic semiconductor device () can be embedded within a printed wiring board (). In various embodiments, the embedded device () can be accompanied by other organic semiconductor devices () and/or passive electrical components (). When so embedded, conductive vias () can be used to facilitate electrical connection to the embedded device. In various embodiments, specific categories of materials and/or processing steps are used to facilitate the making of organic semiconductors and/or passive electrical components, embedded or otherwise.

Organic semiconductor device and method

A mesoscale microelectromechanical system (MEMS) package for a micro-machine. The mesoscale micro-machine is formed on a printed circuit board () at the same time and of the same materials as the mesoscale micro-machine package. Both the micro-machine and the package have a first metal layer (), an insulating member () formed on the first metal layer, and a second metal layer () situated on the insulating layer. The package consists of a perimeter wall surrounding the micro-machine and a low-flow capping adhesive layer (). The first metal layers of both the micro-machine and the package are formed in the same process sequence, and the insulating layers of both the micro-machine and the package are formed in the same process sequence, and the second metal layers of both the micro-machine and the package are formed in the same process sequence. The low-flow capping adhesive secures an optional cover () on the package to provide an environmental seal.

Meso-microelectromechanical system package

Circuit boards ( ) and methods for fabricating circuit boards that include heaters for maintaining temperature sensitive components at an operating temperature are provided. Resistive traces ( ) are included in the circuit boards proximate temperature sensitive apparatus ( ). Thermally conductive patches ( ) are interposed between the resistive traces and the temperature sensitive components. The thermally conductive patches establish zones of relatively uniform temperatures. According to a preferred embodiment of the invention the temperature sensitive apparatus comprises a fluid conduit ( ).

Heater for temperature control integrated in circuit board and method of manufacture

An article comprised of a material that can be wetted by electrolyte solutions contains indicator substances sensitive to acid, caustic and or salt solutes that are present in said electrolyte solutions: said articles are employed as whole or partial encapsulation for devices, especially electrochemical cells, and thereby provide an enhanced alerting function for electrolyte leaks and spills.

Energy devices with means for failure detection

A method for making high power electrochemical charge storage devices, provides for depositing an electrically conducting polymer (16), (18), onto a non-noble metal substrate (10), which has been prepared by treatment with a surfactant. Using this method, high power, high energy electrochemical charge storage devices may be fabricated with highly reproducible low cost.

Method for fabricating a conductive polymer energy storage device

An electrochemical battery cell (10) including a zinc electrode (20), and may be fabricated with an electrolyte (50) system including an electrolyte active species and a modifier. The electrolyte active species is typically a metal hydroxide such as KOH or NaOH, while the modifier may be a porphine such as a metal porphine, and/or a polymeric material. The polymeric material may be, for example, a polyvinyl resin such as polyvinyl alcohol or polyvinyl acetate. The resulting electrolyte typically includes between 3 and 10 weight percent of the polyvinyl resin, 5 and 50 weight percent of the metal hydroxide, and between 1 PPM and 1 wt % of the modifier. Employing such an electrolyte in a cell including a zinc electrode results in an energy storage device having improved power density and substantially longer cycle life.

Rechargeable electrochemical cell with modified electrolyte

An electrochemical cell is provided with first (10) and second (11) electrodes and a solid polymer electrolyte (15) disposed therebetween. The electrodes include a current collecting layer, a layer of electrode active material, and a layer of an electrically conductive, polymeric protection material disposed therebetween. The protective layer protects, for example, the current collecting layer from the deleterious effects of the acid or alkaline electrolyte active species found in most electrochemical cells. The protective layer is formed of an intermetallic compound dispersed through a layer of appropriately chosen polymeric material.

Electrically conductive polymeric coating for an electrochemical charge

An electrochemical cell is provided with first (10) and second (11) electrodes and a solid polymer electrolyte (15) disposed therebetween. The solid polymer electrolyte is preferably fabricated by providing a linear powdered polymeric precursor material which is thereafter heated to temperatures sufficient to drive off moisture and in the presence of an electrolyte active species. The electrolyte active species is preferably an acidic electrolyte active species which has the effect of protonating the powdered polymeric precursor material. Electrochemical cells fabricated using these devices demonstrate performance characteristics far better than those available in the prior art.

Electrochemical cell having a polymer electrolyte

A hybrid electrode for a high power, high energy, electrical storage device contains both a high-energy electrode material (42) and a high-rate electrode material (44). The two materials are deposited on a current collector (40), and the electrode is used to make an energy storage device that exhibits both the high-rate capability of a capacitor and the high energy capability of a battery. The two materials can be co-deposited on the current collector in a variety of ways, either in superimposed layers, adjacent layers, intermixed with each other or one material coating the other to form a mixture that is then deposited on the current collector.

High power, high energy, hybrid electrode and electrical energy storage

An electrochemical cell is provided with a first and second electrode assemblies (10) (11), and an electrolyte (15) disposed therebetween. The electrodes may either be of the same or different materials and may be fabricated from ruthenium, iridium, cobalt, tungsten, vanadium, iron, molybdenum, nickel, silver, zinc, and combinations thereof. The electrode assemblies are fabricated by depositing a layer (16) of a conductive ink adhesive on a surface of a current collecting substrate (12). Thereafter, a layer of powdered active material (18) is impregnated onto the surface of the conductive ink layer.

Electrodes for electrochemical cells and method of making same

Electrodes for electrochemical capacitor are modified with a metal macrocyclic complex made up of phthalocyanine or porphyrin ligands bound to a transition metal to achieve improved conductivity, reversibility, and charge storage capacity. The electrode is formed from a metal base and coated with an oxide, nitride or carbide of a transition metal or with a conductive polymer. This coating is modified with the metal macrocyclic complex. Suitable metal macrocyclic complexes are iron phthalocyanine (FePc), iron meso-tetra(N-methyl-4-phenyl)porphyrin (FeTPP) or cobalt protoporphyrin (CoPP).

Macrocyclic complex modified electrodes and capacitors made therefrom

An electrolyte for an electrochemical cell is provided. The electrolyte is an admixture of H.sub.3 PO.sub.4 and a high temperature polymer such as poly(benzimidazole) in ratios between 2:1 and 50:1, Fumed silica is added to the electrolyte at levels between 0.2% and 8% by weight. An electrochemical cell is fabricated using the electrolyte, and exhibits improved adhesion between the electrolyte and the electrode.

Polymer electrolyte and an electrochemical cell containing the

An electrochemical cell is provided with a first and second electrodes, and a solid polymer electrolyte disposed therebetween. The electrodes may either be of the same or different materials and may be fabricated from ruthenium, iridium, cobalt, tungsten, vanadium, iron, molybdenum, nickel, silver, zinc, and combinations thereof. The solid polymer electrolyte is in intimate contact with both the anode and the cathode, and is made from a polymeric support structure having dispersed therein an electrolyte active species. The polymer support structure is preferably a polybenzimidazole.

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Northbrook, IL, United States of America

Ke Keryn Lian